Career
He was drafted by Adelaide with pick #16 in the 2005 National Draft. After impressing for Glenelg in the SANFL, Douglas made his American Federation of Labor-Congress debut in round 21 of 2006, his first season, against Portuguese Adelaide. He played two further games for the season, including a Qualifying Final.
Douglas established himself in the side over the next two years, playing 13 games in 2007 and 22 of a possible 23 games in 2008.
In June 2009, in the lead-up to Adelaide"s clash with North Melbourne, Douglas had a scare when he began displaying symptoms consistent with the swine influenza pandemic, and was quarantined. He returned to play the next match, although he was dropped from the side a few weeks later against Fremantle.
He played 18 games in 2009 in total. In 2010, Douglas was given more responsibility in the midfield by head coach.
Neil Craig. He played all 22 matches in 2010 and also signed a new two-year contract with the club
Douglas struggled with inconsistent form in 2011 following an injury-interrupted pre-season. His 2012 season started in the same vein missing six weeks with a hamstring injury early on, but he recaptured his best form in the second half of the year, playing in the midfield and at half-forward. He played his 100th American Federation of Labor-Congress match in round 12 against Street Kilda.
In 2013 Douglas had one of his best years at the club, finishing runner-up in the Malcolm Blight Medal and being named in the preliminary All-Australian squad.
He ranked third in the competition for inside 50s, eighth for goal assists, and was second at the club for disposals, marks and tackles. He followed up with another consistent season in 2014, averaging 22 disposals and starring in his 150th match against Collingwood in round 18.
On 16 June 2015, Douglas signed a new three-year deal with Adelaide, joining teammate Rory Sloane in committing to the club until the end of 2018, and declaring himself as "a Crow for life".